Ship faster, deploy safely

Feature flags for modern development

FeatureFuse helps you decouple deployment from release, enabling safer rollouts, instant rollbacks, and controlled experimentation.

Start for free Schedule a demo

feature-flags.js

import { useFlags } from 'featurefuse';

export function App() {
  const { flags } = useFlags({
    environmentID: "<envID>"
  });
  
  return (
    <div>
      {flags.newCheckout && (
        <NewCheckoutFlow />
      )}
      
      {!flags.newCheckout && (
        <LegacyCheckoutFlow />
      )}
    </div>
  );
}

Why teams choose FeatureFuse

Feature flags are transforming how teams deploy and release software. Here's why FeatureFuse is the right choice for modern development teams.

Eliminate Risky Deployments

Decouple deployment from release to prevent customer-facing outages. Ship code dark and enable when ready.

Instant Incident Recovery

Turn off problematic features instantly with kill switches. Recover from incidents in seconds, not hours.

Gradual Feature Rollouts

Release to a small percentage of users first. Run canary releases and A/B tests to validate changes safely.

Accelerate Release Cycles

Break the deployment bottleneck. Ship code continuously while controlling feature exposure independently.

Simplify Development Workflow

Enable trunk-based development. Merge incomplete features behind flags to avoid long-lived branches and conflicts.

Coordinate Business Launches

Align engineering with marketing. Deploy when ready, then activate features precisely when business needs them live.

Powerful features, simple implementation

FeatureFuse is built for developers who need reliability, speed, and control.

Server-side feature flags

We strongly believe feature flags should be used server-side to avoid layout shifts, reduce code size, and maintain confidentiality. [^1][^2]

Avoid layout shifts and jank from client-side flag evaluation
Keep pages static with Edge Middleware patterns
Maintain feature confidentiality by not exposing flag names to clients
Reduce bundle size by only sending necessary code to clients

// Server-side feature flag usage
import { getFlags } from 'featurefuse/server';

export async function getServerSideProps() {
  const flags = await getFlags({
    environmentID: process.env.FEATURE_FUSE_ENV_ID,
    userId: 'user-123'
  });
  
  return {
    props: {
      showNewFeature: flags.newFeature,
    }
  };
}

Two-tier caching

Smart caching for blazing fast flag evaluation at any scale.

Comprehensive metrics

Track flag usage with automatic counters and detailed audit logs for every change, giving you complete visibility.

Role-based access

Control who can create, update, and toggle flags with admin, developer, and PM roles for secure team collaboration.

Simple, predictable pricing

Plans that scale with your needs. No surprises, just value.

Starter

$39/month

Perfect for small teams and startups

Up to 5M flag reads/month
Unlimited flags
Basic metrics
Email support

Get started

Ready to ship faster and safer?

Join the teams who are transforming their development workflow with FeatureFuse.

Start for free Schedule a demo